Continuing development at Havieron surpasses 2,400 metres
Drilling continues to intercept significant zones of high-grade gold and copper mineralisation
Greatland Gold plc (AIM:GGP) (Greatland or the Company) is pleased to provide an exploration and development update for Havieron, its world class gold-copper project located in the Paterson Province of Western Australia (Newcrest Mining Limited (Newcrest) is Greatland’s 70% joint venture partner in Havieron).
Highlights
- Decline development:significant progress continues with total development to date now exceeding 2,400 metres including over 1,700 metres of advance in the main access decline (as at 16 June 2023)
- Exciting drilling results:infill drilling continues to intersect high grade gold and copper mineralisation within the lower levels of the South East Crescent with the results to be incorporated into the ongoing Feasibility Study
- Recent results from the South East Crescent include:
– 32m @ 6.6 g/t Au and 0.26% Cu from 1,317m
– 46m @ 4.2 g/t Au and 0.16% Cu from 1,229m
– 62m @ 2.2 g/t Au and 0.06% Cu from 1,349m
– 148m @ 1.7 g/t Au and 0.25% Cu from 1,205m
Greatland Managing Director, Shaun Day, commented:
“We continue to be very pleased with the ongoing progress of the Havieron development which has now surpassed a total of more than 2,400 metres.
Our most recent drilling affirms the impressive widths and high grade nature of the South East Crescent. Particularly encouraging is confirmation of continuous mineralisation through the link zone which connects the South East Crescent with the Eastern Breccia. The Havieron team is focused on incorporating these impressive results into an optimised Feasibility Study.“
Development Update
The main decline continues to progress, having surpassed 1,700m. Decline support excavations for ventilation, services and materials handling takes the total development to over 2,400m.
Drilling Update
The infill drilling programme at Havieron, targeting the lower levels of the South East Crescent Mineral Resource was completed in May 2023. Since the last drilling update on 27 April 2023, a total of six holes were completed for 5,028m with all assay results now received. This most recent drilling takes total drilling at the project to 341 holes for 303,456m.
Work programmes are underway to incorporate these results into future Mineral Resource estimates to support the ongoing Feasibility Study.
Assay results have been received for all six new drill holes along with assays for four previously drilled holes (see Figures 1 and 2). Of these results, eight holes within the SE Crescent returned significant assay intercepts in excess of 50-gram metres of gold (Au ppm x length).
Results were received for HAD173 (Figure 2), testing a near mine exploration target, with no significant mineralisation intercepted.
Figure 1: 3D plan view schematic showing the spatial association of the current growth targets within the Havieron Deposit, South East Crescent, Northern Breccia, NW Pod and Eastern Breccia targets in relation to the existing mineralised extents. Also highlighted are all newly reported drilling result locations.
South East Crescent
At the South East Crescent, the final results from the infill drilling programme were received, with HAD133W11, HAD159W1, HAD171W3, HAD172W3 & HAD172W4 returning the following high-grade intercepts (see Figures 2, 3, 4 and 5):
- HAD133W11
– 62m @ 2.2 g/t Au and 0.06% Cu from 1,349m
- HAD159W1
– 46m @ 4.2 g/t Au and 0.16% Cu from 1,229m, including 22m @ 7.9 g/t Au and 0.27% Cu from 1,253m
- HAD171W3
– 72m @ 1.6 g/t Au and 0.18% Cu from 1,554m
- HAD172W3
– 148m @ 1.7 g/t Au and 0.25% Cu from 1,205m, including 30m @ 3.2 g/t Au and 0.51% Cu from 1,309m
- HAD172W4
– 32m @ 6.6 g/t Au and 0.26% Cu from 1,317m and 28m @ 3.2 g/t Au and 0.06% Cu from 1,472m
Figure 2: Schematic plan view map showing announced section locations, drill hole locations and significant intercepts reported in this release superimposed on the interpreted geology horizontal slice at level 3,850mRL. (Previously reported holes are not shown for the sake of clarity. Note some holes and results appear on multiple sections due to the sections’ orientation and overlap.)
Figure 3: Plan view schematic of a horizontal slice at 3,850mRL through the Havieron mineral system, showing the extents of the 0.5 g/t Au, 1.0 g/t Au and 2.0g/t Au Leapfrog™ grade shells with highlighted newly reported intercepts for this period. This diagram displays recent drilling and new assay results >50-gram metre intersections. Refer to the inset diagram for relationship to all Havieron drilling.
Figure 4: Schematic cross section of geology and recent drilling with significant new drillhole intercepts (looking northwest, Section Line S1, +/-50m section width, as shown in Figure 1 above). Due to section window size and orientation holes may appear on multiple sections. This diagram highlights >50-gram metres intersections drilled during the period.
Figure 5: Schematic cross section of geology and significant new drillhole intercepts (looking northwest, Section Line S2, +/-50m section width, as shown in Figure 1 above). Due to section window size and orientation holes may appear on multiple sections. This diagram highlights >50-gram metres intersections drilled during the period.
About Greatland
Greatland is a mining development and exploration company focused primarily on precious and base metals.
The Company’s flagship asset is the world-class Havieron gold-copper project in the Paterson Province of Western Australia, discovered by Greatland and presently under development in joint venture with ASX gold major, Newcrest Mining Limited (which is the subject of a takeover by Newmont Corporation by way of a scheme of arrangement).
Havieron is located approximately 45km east of Newcrest’s existing Telfer gold mine. The box cut and decline to the Havieron orebody commenced in February 2021. Significant progress continues with total development now exceeding 2,400m including over 1,700m of advance in the main access decline (as at 16 June 2023). Subject to a positive feasibility study and Decision to Mine, Havieron is intended to leverage the existing Telfer infrastructure and processing plant. Access to Telfer will de-risk the development and reduces capital expenditure.
Greatland has a proven track record of discovery and exploration success and is pursuing the next generation of tier-one mineral deposits by applying advanced exploration techniques in under-explored regions. Greatland has a number of exploration projects across Western Australia and in parallel to the development of Havieron is focused on becoming a multi-commodity miner of significant scale.
